(ergative, transitive) To shut with sudden force so as to produce a shock and noise.
(ergative, transitive) To put in or on a particular place with force and loud noise. (Often followed by a preposition such as down, against or into.)
(ambitransitive) To strike forcefully with some implement.
(intransitive) To strike against suddenly and heavily.
(slang, transitive) To strike and take the life of or at least incapacitate for some time.
(slang, transitive) To defeat or overcome in a match.
(colloquial, transitive) To speak badly of; to criticize forcefully.
To compete in a poetry slam.
To dunk forcefully, to slam dunk.
(transitive) To move a customer from one service provider to another without their consent.
(transitive) To drink off, to drink quickly.
(ambitransitive, slang) To inject intravenously; shoot up.
(slang, transitive, vulgar) To perform coitus upon forcefully; to rail.
(US, informal) To occupy and busy with a high workload.

(countable) A sudden impact or blow.
(countable) The shock and noise produced by violently closing a door or other object.
(countable) A slam dunk.
(countable) One of the competitions of the yearly Grand Slam events.
(US, colloquial, countable) An insult.
(UK, dialectal, uncountable) The yellow iron silicate produced in alum works as a waste product.
(countable, uncountable) A poetry slam.
(countable, uncountable) A slambook.
(uncountable) A subgenre of death metal with elements of hardcore punk focusing on midtempo rhythms, breakdowns and palm-muted riffs.

(obsolete, uncountable) A type of card game, also called ruff and honours.
(countable, uncountable) A card game, played all at once without separate turns, in which players attempt to get rid of their cards as quickly as possible according to certain rules.
(countable) Losing or winning all the tricks in a game.
(countable) A bid of six (small slam) or seven (grand slam) in a suit or no trump.
(countable) Winning all (or all but one) of the available, major or specified events in a given year or sports season.

A shambling fellow.

slamming

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